Chevrolet Silverado 2002–2003 — technical service bulletin
Bulletin 020730032A · NHTSA communication 10000467 · issued Nov 1, 2002
Technical service bulletin
communication type
Power Train
component
2002–2003
model years
4
vehicle entries
Official summary
Allison transmission control module fastlearn procedure update required after transmission repairs. *tt
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.